String path=request.getParameter("path");

		if(path!=null){

			path=CommonUtil.getNewString(path);//处理中文乱码

			CommonUtil.getNewString(path);//处理中文乱码

			//path=new String(path.getBytes("ISO-8859-1"),"UTF-8");

			System.out.println(path);

		}

		//得到要下载文件的真实路径

		String realPath=this.getServletContext().getRealPath(path); 

		System.out.println(realPath);

		//创建要下载的文件对象

		//DownLoadUtil.downLoadFile(realPath, response);

		File file=new File(realPath);

		//获得文件名

		String fileName=file.getName();

		//获得文件后缀

		String ext=FileUtil.getFileType(fileName);

		System.out.println(ext);

		//解决下载时文件名中文乱码问题

		fileName=URLEncoder.encode(fileName,"utf-8");

		System.out.println(fileName);

		

		//判断文件是否存在

		 if (file.exists()) {  

			 System.out.println("*********************************");

//			  FileInputStream inStream = new FileInputStream(file); 

//			  ServletOutputStream servletOS = response.getOutputStream();  

//			  response.reset();

//             response.setContentType("application/x-msdownload");  

//             response.setHeader("Content-Disposition","attachment; filename=\"" + fileName + "\"");

//

////

//             int fileLength = (int) file.length();   

//             response.setContentLength(fileLength);   

//             /* 如果文件长度大于0 */  

//             if (fileLength != 0) {   

//                 /* 创建输入流 */  

////                

//                 byte[] buf = new byte[4096];   

//                 /* 创建输出流 */  

//                

//                 int readLength;   

//                 while (((readLength = inStream.read(buf)) !=-1)) {   

//                     servletOS.write(buf, 0, readLength);   

//                 }   

//                 inStream.close();   

//                 servletOS.flush();   

//              &